Meaning

noun a small picture inserted within the bounds or a larger one

noun an artifact that is inserted or is to be inserted

noun a piece of material used to strengthen or enlarge a garment

originFrom Middle English insetten, from Old English insettan (“to set in, institute, appoint”), equivalent to in- + set. Cognate with Dutch inzetten (“to insert, set in”), Low German insetten (“to set in”), German einsetzen (“to insert, employ”), Danish indsætte (“to insert”), Swedish insätta (“to inset, induct, institute”), Icelandic innsetja (“to install”).

Etymology from Wiktionary, CC BY-SA 3.0